Herbert used many sources. "Kwisatz Haderach" for example comes from Kabbalstic tradition, which in Hebrew (kfitzas haderekh - קפיצת הדרך) means "contraction of the way", referring to ability to warp space (i.e. to travel huge distances in short time). He even describes the term the same way.

https://en.wikipedia.org/wiki/Kefitzat_Haderech